CN102955333B - Camera head and projector - Google Patents
Camera head and projector Download PDFInfo
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- CN102955333B CN102955333B CN201210284397.2A CN201210284397A CN102955333B CN 102955333 B CN102955333 B CN 102955333B CN 201210284397 A CN201210284397 A CN 201210284397A CN 102955333 B CN102955333 B CN 102955333B
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- light
- movable member
- camera head
- optical filter
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
- G03B17/14—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets interchangeably
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/48—Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus
- G03B17/54—Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus with projector
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/28—Reflectors in projection beam
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03542—Light pens for emitting or receiving light
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0425—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means using a single imaging device like a video camera for tracking the absolute position of a single or a plurality of objects with respect to an imaged reference surface, e.g. video camera imaging a display or a projection screen, a table or a wall surface, on which a computer generated image is displayed or projected
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/10—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
- H04N23/11—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths for generating image signals from visible and infrared light wavelengths
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3191—Testing thereof
- H04N9/3194—Testing thereof including sensor feedback
Abstract
The present invention provides camera head and projector, it is possible to carry out the shooting based on infrared ray and visible ray.Camera head (4) possesses: the imaging apparatus (41) that projection surface is imaged；The optical filter (44) that ultrared transmitance is higher than the transmitance of visible ray；The visible light-transmissive parts (45) that the transmitance of visible ray is higher than optical filter (44)；And switching part (5), the 1st state configuring optical filter (44) in the light path of light being incident to imaging apparatus (41) is switched over by it with the 2nd state configuring visible light-transmissive parts (45) in light path.
Description
Technical field
The present invention relates to camera head and projector.
Background technology
In the past, it is known to according to image information the light penetrated from light source be modulated and be projected to the projector on the projection surfaces such as screen enlargedly.In recent years, it has been proposed that the technology (for example, referring to patent documentation 1) of figure or word etc. can be shown on the image that projector projects overlappingly.
Projector described in patent documentation 1 has camera head, and, by going out ultrared pointing device (pointingdevice) with the past end-fire and to hold a concurrent post the PC (PersonalComputer: personal computer) of image output device and image analysis apparatus combined, thus constituting the display system as interactive whiteboard system.Camera head has the photographing unit in the peristome being arranged in case body, and this peristome is through ultrared lid and is closed.The infrared ray that photographing unit detection is penetrated from the pointing device being operated on projection surface.Further, projector is configured to project the rail graph of a correspondence etc. with pointing device overlappingly with original image.
[patent documentation 1] Japanese Unexamined Patent Publication 2011-2650 publication
In patent documentation 1, about through ultrared lid, although not being described in detail, but consider following manner: have employed the parts of the wavelength cut-off making the visible ray etc. beyond infrared ray, photographing unit is made not receive the light beyond the infrared ray sent from pointing device, from without causing misrecognized.
Thus, the projector described in patent documentation 1 is configured to: photographing unit is able to detect that the infrared ray sent from pointing device and projects overlappingly with original image, it can be difficult to utilize the visible ray beyond infrared ray to image.Thus, there are the following problems for the projector described in patent documentation 1: photographing unit is difficult to the image being incident upon on projection surface is imaged, so processing cannot be implemented according to the image being incident upon on projection surface.Such as, because the adjustment pattern that photographing unit cannot shoot the position for adjusting (calibration) pointing device on projection surface and the distortion of image projected, so there is a problem in that the distortion correction can not being automatically calibrated with image, the operation of projector is very miscellaneous.
Summary of the invention
The present invention makes to solve at least some of of above-mentioned problem, and it can realize as following mode or application examples.
[application examples 1] should the camera head of use-case be characterized by, this camera head possesses: imaging apparatus, and subject is imaged by it；Optical filter, the transmitance of its region of ultra-red is higher than the transmitance of visible region；Visible light-transmissive parts, the transmitance of its visible region is higher than the transmitance of the described visible region of described optical filter；nullAnd switching part，The 1st state configuring described optical filter in the light path of light being incident to described imaging apparatus is switched over by it with the 2nd state configuring described visible light-transmissive parts in described light path，Described switching part possesses movable member，Described movable member keeps described optical filter and described visible light-transmissive parts，Described movable member is by switching over described 1st state and described 2nd state by the rotation centered by the upwardly extending central shaft in the side of the optical axis along described imaging apparatus，Described optical filter and described visible light-transmissive parts are configured at described movable member side by side，Described movable member has the shape radially extended from an end residing for described central shaft to another end，And in another end described, there is gear part，Described switching part has by transmitting drive force to the drive division that described gear part makes described movable member rotate，When switching to described 2 state from described 1st state、With when switching to described 1 state from described 2nd state，Described movable member rotates in the opposite direction.
According to should use-case, camera head possesses optical filter and visible light-transmissive parts, and be configured to, utilize switching part that the 1st state configuring optical filter in the light path of light being incident to imaging apparatus is switched over the 2nd state configuring visible light-transmissive parts in light path.Thus, imaging apparatus is able to receive that under the 1st state the infrared ray through optical filter images, under the 2nd state, it is possible to receives the visible ray through visible light-transmissive parts and images.
It addition, in the light path of light being incident to imaging apparatus, configure optical filter under the 1st state, under the 2nd state, configure visible light-transmissive parts, thus it is possible to reduce the difference of the refractive status of the light arriving imaging apparatus in the 1st state and the 2nd state.Thus, imaging apparatus can suppress the focal shift of the 1st state and the 2nd state both sides to image.
Therefore, according to should the camera head of use-case, it is possible to realize the reliable shooting based on infrared ray and visible ray.
[application examples 2] is in the camera head described in above-mentioned application examples, preferably, this camera head is also equipped with making the light pick-up lens of imaging on described imaging apparatus from described subject, under described 1st state and described 2nd state, described optical filter and described visible light-transmissive parts are inserted between described imaging apparatus and described pick-up lens.
According to should use-case, owing to optical filter and visible light-transmissive parts are configured between imaging apparatus and pick-up lens, so, on imaging apparatus, optical filter and visible light-transmissive parts will be incident to by the light of imaging by the effect of pick-up lens.Thus, it is configured in pick-up lens with optical filter and visible light-transmissive parts or is configured in compared with the structure of the side that imaging apparatus is contrary relative to pick-up lens, it is possible to the size reducing optical filter and visible light-transmissive parts and the amount of movement that the 1st state and the 2nd state are switched over.Thereby, it is possible to realize the miniaturization of camera head.
It addition, because being configured to close with imaging apparatus by optical filter and visible light-transmissive parts, thus it is possible to reduce the difference of the refractive status of the light arriving imaging apparatus under the 1st state and the 2nd state further efficiently.
Therefore, according to should the camera head of use-case, miniaturization can be realized, the reliable shooting of infrared view and visible images can be realized again.
[application examples 3] is in the camera head of above-mentioned application examples, it is preferred that described switching part is also equipped with base component, and described movable member is can be supported in described base component in the way of rotating.
According to should use-case, movable member keeps optical filter and visible light-transmissive parts, and is supported on base component, by making movable member rotate, switches the 1st state and the 2nd state.It addition, movable member is to pivot about at the upwardly extending central shaft in the side of the optical axis along imaging apparatus.That is, by making movable member rotate, thus, optical filter and visible light-transmissive parts move in the face vertical with the optical axis of imaging apparatus, come in and go out between imaging apparatus and pick-up lens.Thus, by carrying out between imaging apparatus and pick-up lens inserting and from exiting between them, it is possible to be easily achieved the structure that the 1st state and the 2nd state are switched over.
It addition, optical filter and visible light-transmissive parts are the structures that the rotation by movable member moves, so, compared with the structure such as moved along straight line with other move mode, it is possible to carry out high-precision movement.Thereby, it is possible to the size setting optical filter and visible light-transmissive parts efficiently realizes miniaturization and cost degradation, and, by arranging the detection switch of detection movable member position, it is possible to easily detection is the 1st state or the 2nd state.
[application examples 4] projector of use-case should be characterized by possessing: projection unit, and it is implemented modulation according to the image information light to penetrating from light source and project；And the camera head according to any one of above-mentioned application examples, its projection surface that light penetrated from above-mentioned projection unit is projected images.
According to should use-case, projector possesses projection unit and aforesaid camera head, thus it is possible to the photographed images of infrared ray captured by imaging apparatus and visible ray carries out the projection of image.
Such as, with the addition of in this projector in system of pointing device etc., can apply as follows.Namely, under the 2nd state, the adjustment pattern that projection unit can be projected by camera head images (shooting of visible images), it is possible to being obtained by dynamic(al) correction etc. of distortion of calibration and image for adjusting the pointing device position on projection surface.And, under the 1st state, the infrared view of the pointing device being operated on next comfortable projection surface can be imaged by camera head, makes projection unit project overlapping images on projection surface, and these superimposed images are the images of this ultrared information overlapping in image information.Thereby, it is possible to reduce miscellaneous property of operator and easily interact the input and output of formula, using the teaching of the invention it is possible to provide give lessons and meeting etc. utilizes far-ranging projector.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the structure of the display system illustrating the projector that have employed the 1st embodiment.
Fig. 2 is the axonometric chart of the outward appearance of the projector illustrating the 1st embodiment.
Fig. 3 is the schematic diagram of the schematic configuration of the projector illustrating the 1st embodiment.
Fig. 4 is the axonometric chart of the camera head of the 1st embodiment.
Fig. 5 is the exploded perspective view of the camera head of the 1st embodiment.
Fig. 6 is the figure illustrating the camera head in the 2nd state of the 1st embodiment.
Fig. 7 is the top view of the camera head of the 1st embodiment.
Fig. 8 is the schematic diagram of the switching part of the 2nd embodiment.
Fig. 9 is the sectional view of the camera head schematically showing variation 2.
Symbol description
1 ... projector, 3 ... optical unit, 4, 14, 24 ... camera head, 5, 15, 25 ... switching part, 20 ... PC, 30 ... pointing device, 36 ... projector optical apparatus, 40 ... a support arrangement, 41 ... imaging apparatus, 41J ... optical axis, 43 ... pick-up lens, 44 ... optical filter, 45 ... visible light-transmissive parts, 51, 151, 251 ... movable member, 51J ... central shaft, 52 ... base component, 53, 152 ... drive division, 100 ... display system, 311 ... light source, 361 ... group lens section, 362 ... reflecting part, 531 ... motor, 152S, 252S ... solenoid, SC ... projection surface.
Detailed description of the invention
(the 1st embodiment)
Hereinafter, the projector of the 1st embodiment it is explained with reference to.
Fig. 1 is the schematic diagram of the schematic configuration of the display system 100 of the projector 1 illustrating and have employed present embodiment.
Display system 100 possesses the projector 1 of present embodiment, the PC as image output device (PersonalComputer: personal computer) 20 being connected via not shown cable and pointing device 30 with projector 1.
As it is shown in figure 1, projector 1 is supported by the support arrangement 40 being arranged on the wall above the projection surface SC such as screen, from the oliquely downward projection light of the side towards lower section, projection surface SC projects the image corresponding with from the PC20 image information sent.Projector 1 is configured to possess camera head 4 (with reference to Fig. 3), it is possible to the projection surface SC as subject is imaged, after projector 1 will be described in detail.
Pointing device 30 sends infrared ray when its front end is pressed against on projection surface SC from leading section.
PC20 sends image information to projector 1, and carries out the control based on the photographed images captured by camera head 4.
Display system 100 is configured to: can implement to adjust or project overlapping images on projection surface SC by the image captured by camera head 4, the image that these superimposed images are the rail of overlapping pointing device 30 in image information and obtain.
[primary structure of projector]
Fig. 2 is the axonometric chart of the outward appearance of the projector 1 illustrating present embodiment, is that side (side that light is projected) observes the figure of the projector 1 in Fig. 1 from below.Fig. 3 is the schematic diagram of the schematic configuration of the projector 1 illustrating present embodiment.
As shown in Figure 2 and Figure 3, projector 1 possess constitute the case body 2 of shell, control portion (omit diagram), as the optical unit 3 of projection unit and camera head 4.
Though additionally, omit diagram, but being also configured with light supply apparatus 31 that optical unit 3 is possessed in the inside of case body 2 and supply unit that control portion is powered, chiller etc. that optical unit 3 is cooled down.Below additionally, for the ease of explanation, projector 1 is supported under the state on support arrangement 40 normal direction corresponding with projection surface SC is designated as fore-and-aft direction, direction towards projection surface SC is designated as front to (+Y direction), upper direction (+Z direction) will be designated as with gravity opposite direction, towards projection surface SC, right side will be designated as right direction (+X direction).
Case body 2 is combined with multiple plastic parts and constitutes, as in figure 2 it is shown, this case body 2 has: form the projection side 2A in the face of-Z side；Form the fixture installed surface 2B in the face of+Z side；Form the left surface 2C in face, the right flank 2D of left and right respectively；And form 2F, below 2E before the face of front and back respectively.
As in figure 2 it is shown, on projection side 2A, near rear (-Y direction) in the longitudinal direction, be formed with the recess 21 possessing the 1st inclined plane 21a and the 2nd inclined plane 21b, be configured with the guidance panel 22 with multiple key at the rear of recess 21.
1st inclined plane 21a is positioned at 2E side below relative to the 2nd inclined plane 21b, and along with close from the rear to the front, tilts towards +Z direction (direction close to fixture installed surface 2B).2nd inclined plane 21b and the 1 inclined plane 21a connects, and along with close from the rear to the front, towards-Z direction (with fixture installed surface 2B phase from direction) and tilt.
1st inclined plane 21a is provided with the recess 211 formed close to left surface 2C side, in the bottom of this recess 211 is divided, is formed with the 1st peristome 211H.
Projection side 2A is configured to, and when projector 1 is supported on and props up support arrangement 40 downward (with reference to Fig. 1), projector 1 is from the 1st peristome 211H to projection surface SC projection light.
In the +X direction of the recess 211 in the 1st inclined plane 21a, it is sequentially formed with the 2nd peristome 212H and the 3rd peristome 213H of substantially rectangular shape.
Camera head 4 described later is configured in the 2nd peristome 212H.In the 3rd peristome 213H, configuration receives the infrared rays receiver (omitting diagram) of the infrared signal from remote controller (omitting diagram), utilizes and can pass through infrared ray but make the lid 23 that visible ray ends to close the 3rd peristome 213H.
The air entry 214 with multiple slot-shaped hole it is formed with in the front side of left surface 2C.Though the diagram of omission, but air filter and drawing fan it is configured with in the inner side of this air entry 214, by the driving of drawing fan, import for the cooling air cooled down in case body 2 via air entry 214 and air filter.
Though the diagram of omission, but right flank 2D is provided with air vent, it is configured with scavenger fan in the inner side of this air vent.Further, what drawing fan imported the air cooled down in case body 2 is discharged from this air vent.
As it is shown in figure 1, be provided with joint 50 on fixture installed surface 2B, by this joint 50, projector 1 is arranged on a support arrangement 40.
Though it addition, omit diagram, but being formed with peristome on fixture installed surface 2B, with the outside that the cable (omitting diagram) being connected terminal connection reaches projector 1 from this peristome.Further, reach the cable of the outside of projector 1 and be inserted in a support arrangement 40, be connected through external equipments such as wall and PC20.
Control portion possesses CPU (CentralProcessingUnit: central processing unit), ROM (ReadOnlyMemory: read only memory), RAM (RandomAccessMemory: random access memory) etc., as computer function, carry out the action control of projector 1, for instance the control etc. relevant to image projection.
[structure of optical unit]
The light penetrated from light source 311, under the control in control portion, is modulated and projects according to image information by optical unit 3.
Optical unit 3 possesses as shown in Figure 3: light supply apparatus 31, integration lamp optical system 32, color separation optical system 33, relay optical system 34, electro-optical device 35, projector optical apparatus 36 and the assigned position place in light path configure the optical component casing 37 of these opticses.
As it is shown on figure 3, optical unit 3 is shaped generally as L-shaped when overlooking, configure light supply apparatus 31 removably an end, configure projector optical apparatus 36 in another end.
Light supply apparatus 31 possesses: discharge-type light source 311, reflecting mirror 312 and the parallel lens 313 etc. as light transparent member being made up of extra-high-pressure mercury vapour lamp or metal halide lamp etc..Light supply apparatus 31, after by reflecting mirror 312 light penetrated from light source 311 being reflected, is utilized parallel lens 313 to make injection direction consistent, penetrates to integration lamp optical system 32.
Integration lamp optical system 32 possesses the 1st lens arra the 321, the 2nd lens arra 322, polarization 323 and overlapping lens 324.
1st lens arra 321 is the optical element that the light penetrated from light supply apparatus 31 is divided into multiple part light, and it possesses multiple lenslet, and these multiple lenslets are arranged in rectangular in substantially vertical for the optical axis C face with the light penetrated from light supply apparatus 31.
2nd lens arra 322 has and the 1st lens arra 321 same structure, with overlapping lens 324 together so that overlap the surface of liquid crystal light valve 351 described later from the part light of the 1st lens arra 321 injection.
Polarization 323 has following function: the random polarization penetrated from the 2nd lens arra 322 is unified into the available substantially a kind of polarized light of liquid crystal light valve 351.
Color separation optical system 33 possesses 2 dichroic mirrors 331,332 and reflecting mirror 333, and has following function: the light penetrated from integration lamp optical system 32 is separated into red light (hereinafter referred to as " R light "), green light (hereinafter referred to as " G light "), blue light (hereinafter referred to as " B light ") this 3 coloured light.
Relay optical system 34 possesses light incident side lens 341, relay lens 343 and reflecting mirror 342,344, and has following function: the R light after being separated by color separation optical system 33 is directed to the liquid crystal light valve 351R of R light.Additionally, optical unit 3 is configured to by relay optical system 34, R light be guided, but it is not limited to this, for instance can also be the structure that B light is guided.
Electro-optical device 35 possesses the liquid crystal light valve 351 as optic modulating device and the cross dichroic prism 352 as color synthesizing optical device, according to image information, the white light after being separated by color separation optical system 33 is modulated, and the white light after modulation is synthesized.
Possess liquid crystal light valve 351 for every coloured light of 3 coloured light and (liquid crystal light valve of R light is set to 351R, the liquid crystal light valve of G light is set to 351G, the liquid crystal light valve of B light is set to 351B), described liquid crystal light valve 351 is respectively provided with the liquid crystal panel of transmission-type and is arranged in the incident side polarization plate on its two sides, exiting side polarization plates.
Liquid crystal light valve 351 has in the rectangular rectangular-shaped pixel region being formed with not shown small pixel, and each pixel is set to the light transmittance corresponding with display image signals, forms display image in pixel region.Further, color separation optical system 33 white light after separating, after being modulated via liquid crystal light valve 351, penetrates to cross dichroic prism 352.
Cross dichroic prism 352, when by vertical view after the bonding of 4 corner cube prisms, is substantially square shape, is formed with 2 multilayer dielectric film on the interface that corner cube prism is fitted each other.Cross dichroic prism 352 utilizes multilayer dielectric film that the colourama after being modulated by liquid crystal light valve 351R, 351B is reflected, and the colourama after being modulated by liquid crystal light valve 351G is passed through, and then white light is synthesized.
Projector optical apparatus 36 possesses the group lens section 361 by multiple lens combinations and has the reflecting part 362 of reflecting mirror of aspherical shape.Light after being synthesized by cross dichroic prism 352 is amplified via group lens section 361, and reflects after being implemented wide angle by reflecting part 362.Then, the light after being reflected by reflecting part 362 is projected to projection surface SC (with reference to Fig. 1) by the 1st peristome 211H (with reference to Fig. 2) of case body 2.
So, projector optical apparatus 36 possesses group lens section 361 and reflecting part 362, and thus the projector 1 of present embodiment is configured to the so-called short focus projection instrument that projection distance is short.
As it has been described above, camera head 4 is configured in the 2nd peristome 212H, it is configured to shoot to the image being incident upon on projection surface SC and from the infrared ray that sends of pointing device 30 performing operation on projection surface SC.
[structure of camera head]
Here, camera head 4 is described in detail.
Fig. 4 is the axonometric chart of camera head 4.Fig. 5 is the exploded perspective view of camera head 4.
As shown in Figure 4, Figure 5, camera head 4 possesses imaging apparatus 41, circuit substrate 42, pick-up lens 43, optical filter 44, visible light-transmissive parts 45 and switching part 5.
Imaging apparatus 41 is such as made up of CCD (ChargeCoupledDevice: charge-coupled image sensor) or CMOS (ComplementaryMetalOxideSemiconductor: complementary metal oxide semiconductors (CMOS)) etc..
Circuit substrate 42 is installed with imaging apparatus 41, is connected with control portion via not shown cable.By (tilting relative to X-Y plane) configuration circuit substrate 42 in the way of the 1st inclined plane 21a (with reference to Fig. 1, Fig. 2) so that the light accepting part 411 of imaging apparatus 41 is towards projection surface SC side, so that projection surface SC to be imaged efficiently.
Although eliminating detailed view, but pick-up lens 43 is made up of multiple camera lenses so that be incident upon the image on projection surface SC and the infrared imaging that sends from the pointing device 30 being operated on projection surface SC on imaging apparatus 41.It addition, pick-up lens 43 can shoot whole projection surface SC, so it is wide-angle lens.
Optical filter 44 is the transmitance parts higher than the transmitance of visible region of region of ultra-red, and in other words, optical filter 44 is formed so that the so-called IR filter that infrared ray passes through and make visible ray to end.The optical filter 44 of present embodiment forms thin film by evaporation etc. on glass board material and constitutes.
Visible light-transmissive parts 45 are configured to the transmitance transmitance higher than the visible region of optical filter 44 of its visible region.It addition, visible light-transmissive parts 45 are glass board material, it is formed as having the thickness being equal to optical filter 44.
As it is shown in figure 5, optical filter 44 and visible light-transmissive parts 45 are formed as rectangle when overlooking, it is configured at the movable member 51 of switching part 5 described later side by side.Additionally, optical filter 44, visible light-transmissive parts 45 are not limited to glass manufacture, it is also possible to be synthetic resin etc..
About optical filter 44 and visible light-transmissive parts 45, by rotating movable member 51, the 1st state configuring optical filter 44 in the light path of light being incident to imaging apparatus 41 is switched over the 2nd state configuring visible light-transmissive parts 45 in this light path.Specifically, about optical filter 44 and visible light-transmissive parts 45, by rotating movable member 51, perform to carrying out between imaging apparatus 41 and pick-up lens 43 inserting and from the operation return between them, thus the 1st state and the 2nd state are switched over.
As it is shown in figure 5, switching part 5 possesses movable member 51, base component 52, drive division 53 and pressing component 54, it is configured to the 1st state and the 2nd state are switched over.
Fig. 6 is the figure illustrating the camera head 4 in the 2nd state, and (a) is top view, and (b) is sectional view.Additionally, Fig. 6 is the figure eliminating circuit substrate 42, base component 52 and pressing component 54.
Movable member 51 keeps optical filter 44 and visible light-transmissive parts 45, can be supported in base component 52 in the way of rotating.As shown in Fig. 6 (a), the shape radially extended from an end to another end when movable member 51 has vertical view.Further, movable member 51 is formed with the circular hole centered by central shaft 51J (bearing 511) an end side, is formed with the gear part 51G centered by central shaft 51J in another end.As it is shown in figure 5, central shaft 51J extends on the direction along the optical axis 41J of imaging apparatus 41.
Movable member 51 is formed with two rectangular-shaped recesses, optical filter 44 and visible light-transmissive parts 45 between bearing 511 and gear part 51G and is bonded in this recess and is set up in parallel (with reference to Fig. 5).It addition, be respectively formed with peristome in the bottom surface of the two recess, penetrated to imaging apparatus 41 by this peristome through the light of all parts in the 1st state, the 2nd state.
Specifically, in the 2nd state, it is seen that light-transmissive member 45 is inserted between imaging apparatus 41 and pick-up lens 43 as Suo Shi Fig. 6 (b).Further, the light penetrating and passing through visible light-transmissive parts 45 from pick-up lens 43 is penetrated to imaging apparatus 41 by the peristome of recess.Though the diagram of eliminating, but in the 1st state, optical filter 44 is inserted between imaging apparatus 41 and pick-up lens 43.Further, the light penetrating and passing through optical filter 44 from pick-up lens 43 is penetrated to imaging apparatus 41 by the peristome of recess.
As it is shown in figure 5, base component 52 is configured between circuit substrate 42 and movable member 51, it is pivotably supported movable member 51.
As it is shown in figure 5, base component 52 is formed as rectangular-shaped when overlooking, it is formed about an end supporting axle 521, has been arranged around gear in another end and has supported axle 522.
Support axle 521 to be inserted on the bearing 511 of movable member 51, be pivotably supported movable member 51.Gear supports axle 522 and is inserted on relay gear 532 described later, is pivotably supported relay gear 532.
It addition, base component 52 supports and is provided with peristome 523 and guide protrusion 524 between axle 522 supporting axle 521 and gear, it is formed about circular hole 525 what gear supported axle 522.
Peristome 523 is formed so that the light passing through optical filter 44 or visible light-transmissive parts 45 passes through.Guide protrusion 524 is the position prominent in arc-shaped centered by central shaft 51J, and it is formed and supports between axle 522 at peristome 523 and gear.Further, guide protrusion 524 makes movable member 51 guide in the way of carrying out the rotation smoothed to contact with movable member 51.Circular hole 525 is penetratingly inserted into the little gear 5311 of motor 531 described later.
As it is shown in figure 5, drive division 53 possesses motor 531, relay gear 532, movable member 51 is made to rotate according to the instruction in control portion.
Motor 531 has the little gear 5311 being assembled on driving axle.About motor 531, the lower section of the little gear 5311 base component 52 from the drawing view of Fig. 5 is penetratingly inserted in circular hole 525, is installed in the lower surface of base component 52.
Driving force produced by motor 531 is passed to movable member 51 by relay gear 532.Specifically, relay gear 532 is plastic, as shown in Figure 5, Figure 6, possesses gear wheel portion 5321 and the pinion part 5322 of stacking on this axle.Relay gear 532 is supported axle 522 by the gear of base component 52 and supports, and gear wheel portion 5321 engages with little gear 5311, and pinion part 5322 engages with the gear part 51G of movable member 51.
As it is shown in figure 5, pressing component 54 is relative to movable member 51, it is configured in the opposition side of base component 52.Pressing component 54 is formed as rectangular-shaped when overlooking, and is formed with the cylindrical portion 541 keeping pick-up lens 43 at central part.Pressing component 54 is fixed on base component 52 by screw etc., and rotatably keeps movable member 51 by base component 52.
[action of camera head]
Here, the action of camera head 4 is illustrated.
Fig. 7 is the top view of camera head 4, and (a) is the figure representing the 2nd state, and (b) is the figure representing the 1st state.Additionally, Fig. 7 is the figure eliminating circuit substrate 42, base component 52 and pressing component 54.
Camera head 4 makes motor 531 work according to the instruction in control portion, thus makes movable member 51 rotate and the 1st state and the 2nd state are switched over.Further, camera head 4 can carry out passing through the shooting of the infrared view of optical filter 44 in the 1st state, can carry out passing through the shooting of the visible images of visible light-transmissive parts 45 in the 2nd state.
Specifically, in the 2nd state, camera head 4 is as shown in Fig. 7 (a), it is seen that light-transmissive member 45 is configured between imaging apparatus 41 and pick-up lens 43, it is possible to the image being incident upon on projection surface SC (with reference to Fig. 1) is shot.That is, imaging apparatus 41 can shoot the images such as the adjustment figure that projects projection surface SC from optical unit 3.
Display system 100 can be implemented to adjust by the image captured by imaging apparatus 41.Such as, display system 100, according to the adjustment figure projected from projector 1, carries out automatically adjusting calibration and the automatic image distortion correction etc. automatically of the position that pointing device 30 indicates on projection surface SC.
On the other hand, when indication camera shooting device 4 switches to 1 state from the 2nd state, little gear 5311 is according to rotating clockwise in the top view of Fig. 7 (b).When little gear 5311 turns clockwise, the movable member 51 engaged with little gear 5311 via relay gear 532 turns clockwise centered by central shaft 51J.Further, when movable member 51 rotates to assigned position, as shown in Fig. 7 (b), the 1st state that optical filter 44 is configured between imaging apparatus 41 and pick-up lens 43 is become.
Under the 1st state, the infrared ray that imaging apparatus 41 can send from pointing device 30 being operated on projection surface SC shoots.
PC20 photographed images captured by camera head 4 carries out the parsing of ultrared injection position, generates the superimposed images overlapping with the line representing this injection position rail in image information, and sends the image information of these superimposed images to projector 1.Then, these superimposed images reflecting the line of the rail representing pointing device 30 are projected to projection surface SC by projector 1.
Additionally, the display system 100 of present embodiment is configured to, calibration can also be manually effected under the 1st state.That is, indicate pointing device 30 according to the labelling image projected successively from projector 1 and the infrared ray that sends shoots to along with operator, thus carry out manual calibration.
When indication camera shooting device 4 switches to 2 state from the 1st state, little gear 5311 and movable member 51 rotate to opposite direction when switching to 1 state from the 2nd state.Further, when movable member 51 rotates to assigned position, as shown in Fig. 7 (a), the 2nd state that visible light-transmissive parts 45 are configured between imaging apparatus 41 and pick-up lens 43 is become.
So, camera head 4 makes drive division 53 work according to the instruction in control portion, so that movable member 51 rotates and the 1st state and the 2nd state are switched over, carries out the shooting of ultrared shooting and visible ray.Further, the image of the projector 1 photographed images to shooting based on camera head 4 projects.
As discussed above, according to the camera head 4 of present embodiment and projector 1, it is possible to obtain following effect.
(1) camera head 4 possesses optical filter 44 and visible light-transmissive parts 45, this camera head 4 is configured to, and utilizes the switching part 5 the 1st state to being arranged in by optical filter 44 in the light path of the light being incident to imaging apparatus 41 and the 2nd state being arranged in this light path by visible light-transmissive parts 45 to switch over.Thus, imaging apparatus 41 is under the 1st state, it is possible to receives the infrared ray through optical filter 44 and images, under the 2nd state, it is possible to receives the visible ray through visible light-transmissive parts 45 and images.
It addition, in the light path of light being incident to imaging apparatus 41, configure optical filter 44 under the 1st state, under the 2nd state, configure visible light-transmissive parts 45, it is possible to reduce the 1st state and the difference of the refractive status of the light of arrival imaging apparatus 41 in the 2nd state.Thus, imaging apparatus 41 can suppress the 1st state and the 2nd bipartite focal shift of state to image.
Therefore, camera head 4 is capable of the reliable shooting based on infrared ray and visible ray.
(2) in camera head 4, because pick-up lens 43 is wide-angle lens, it is possible to broader region is imaged.Further, because optical filter 44 and visible light-transmissive parts 45 are configured between imaging apparatus 41 and pick-up lens 43, so to be incident to optical filter 44 and visible light-transmissive parts 45 by the light of imaging on imaging apparatus 41 through pick-up lens 43.Thus, with optical filter 44 and visible light-transmissive parts 45 are arranged in pick-up lens 43 or outside pick-up lens 43 (relative to pick-up lens 43, be in the opposition side of imaging apparatus 41) structure compare, it is possible to the size reducing optical filter 44 and visible light-transmissive parts 45 and the amount of movement that the 1st state and the 2nd state are switched over.Thereby, it is possible to realize the miniaturization of camera head 4.
It addition, optical filter 44 and visible light-transmissive parts 45 are configured to close with imaging apparatus 41, thus it is possible to reduce the 1st state and the difference of the refractive status of the light of arrival imaging apparatus 41 in the 2nd state further efficiently.
Therefore, camera head 4 can while realizing miniaturization, it is achieved based on the reliable shooting of infrared ray and visible ray, and then can provide to inhibit and maximize and have the projector 1 of camera head 4.
(3) optical filter 44 and visible light-transmissive parts 45 are maintained on movable member 51, by making movable member 51 rotate relative to base component 52, the 1st state and the 2nd state are switched over.Thereby, it is possible to be easily achieved following structure: by carrying out between imaging apparatus 41 and pick-up lens 43 inserting and from exiting between them, the 1st state and the 2nd state being switched over.
It addition, compared with the structure making optical filter 44 and visible light-transmissive parts 45 such as move along straight line with other move mode, it is possible to carry out high-precision movement.Thereby, it is possible to set the size of optical filter 44 and visible light-transmissive parts 45 efficiently and realize miniaturization and cost degradation, and, by arranging the detection switch of the position of detection movable member 51, it is possible to easily detection is the 1st state or the 2nd state.
(4) projector 1 is under the 2nd state, camera head 4 the adjustment pattern being projected on projection surface SC is imaged, thus being obtained by calibration or automatic image distortion correction etc. automatically.Further, the infrared ray of pointing device 30 to be operated on comfortable projection surface SC, under the 1st state, is imaged by camera head 4, makes superimposed images be projected on projection surface SC by projector 1.Thereby, it is possible to reduce miscellaneous property of operator, it is easy to the input and output of interacting property such that it is able to providing gives lessons utilizes far-ranging projector 1 with meeting etc..
(5) much less the image being incident upon on screen is shot by camera head 4, even the image being incident upon on the projection surface SC such as classroom or the wall of meeting room, blackboard, it also is able to shoot, it is possible to provide the projector 1 utilizing the degree of freedom of scope to increase.
(the 2nd embodiment)
Then, the projector 1 of the 2nd embodiment it is explained with reference to.In the following description, the structure same with the projector 1 of the 1st embodiment and same parts are marked same symbol, and omits or simplify detail explanation.
The projector 1 of present embodiment possesses the camera head 14 different from camera head 4 structure of the projector 1 of the 1st embodiment.Further, the camera head 14 of present embodiment possesses solenoid 152S and replaces the motor 531 of the 1st embodiment, switches the 1st state and the 2nd state by the driving of this solenoid 152S.
Fig. 8 is the schematic diagram of the camera head 14 of present embodiment, and (a) is the figure representing the 2nd state, and (b) is the figure representing the 1st state.
Camera head 14 possesses imaging apparatus 41 in a same manner as in the first embodiment, circuit substrate 42 (omitting diagram in fig. 8), pick-up lens 43, optical filter 44, visible light-transmissive parts 45 and the switching part 15 different from switching part 5 structure of the 1st embodiment.
As shown in Figure 8, switching part 15 possesses movable member 151, drive division 152 and not shown base component, pressing component.
Movable member 151 keeps optical filter 44 and visible light-transmissive parts 45 in the same manner as the movable member 51 of the 1st embodiment, and has the shape of the gear part 51G eliminating movable member 51.Movable member 151 has the bearing 511 same with movable member 51, and is configured to rotate.It addition, the end that movable member 151 is near bearing 511 is provided with the jut 1511 prominent towards the side contrary with optical filter 44 and visible light-transmissive parts 45.
Drive division 152 possesses solenoid 152S and collapse coil spring 152B.
Solenoid 152S has coil, secured core (all omitting diagram) and movable core 152F, and is configured to, and makes movable core 152F obtain translatory movement by obtaining the supply of electric current.Specifically, when coil is provided electric current, movable core 152F is drawn to secured core, when not providing electric current, disappears towards the captivation of secured core.
The solenoid 152S of present embodiment have employed when being provided electric current, the towed solenoid that the overhang of movable core 152F diminishes, and have employed the type that its captivation is bigger than the force of collapse coil spring 152B.The top of the jut 1511 that solenoid 152S is configured in the drawing view of Fig. 8, and be configured to movable core 152F and be connected with jut 1511.
Collapse coil spring 152B, relative to bearing 511, is configured in the opposition side of solenoid 152S, and one end of collapse coil spring 152B abuts with not shown base component, and the other end abuts with the lower surface of the movable member 151 in the drawing view of Fig. 8.Further, movable member 151 is exerted a force by collapse coil spring 152B upward.
Not shown base component, pressing component rotatably keep movable member 151.
Switching part 15, based on the instruction in control portion, makes movable member 151 rotate according to situation about solenoid 152S being powered and stop power supply, and switches the 1st state and the 2nd state.
Specifically, when providing electric current to solenoid 152S, movable core 152F is to overcome the force of collapse coil spring 152B and to make overhang move in the way of diminishing.The jut 1511 of movable member 151 is by movable core 152F tractive, as shown in Fig. 8 (a), it is seen that light-transmissive member 45 is inserted into becomes the 2nd state between imaging apparatus 41 and pick-up lens 43.
On the other hand, when stopping providing electric current to solenoid 152S, by the force of collapse coil spring 152B, movable member 151 turns clockwise in the drawing view of Fig. 8 (b).Further, the optical filter 44 being maintained on movable member 151 is inserted into as shown in Fig. 8 (b) and becomes the 1st state between imaging apparatus 41 and pick-up lens 43.
As discussed above, according to the camera head 14 of present embodiment and projector 1, following effect can also be obtained except the effect of the 1st embodiment.
(1) can utilize the translatory movement of solenoid 152S that movable member 151 is easily rotated.Thus, the 1st state and the 2nd state can be switched over based on electronic mode by camera head 14 simply to construct.It addition, because solenoid 152S need not possess permanent magnet, it is possible to adopt the solenoid of the type of small-sized, light weight, it is possible to realize the miniaturization of switching part 15, lightweight and the miniaturization of projector 1, lightweight.
(2) in being known as 2nd state fewer than the usage frequency of the 1st state, just electric current is provided to solenoid 152S, it is possible to realize the low power consumption of projector 1.
Additionally, above-mentioned embodiment can be modified as follows.
(variation 1)
Being configured to have employed motor 531 in the 1st embodiment makes movable member 51 rotate, but is not limited to motor 531, it is also possible to be configured to adopt direct current generator etc. to make movable member 51 rotate.
Furthermore it is also possible to arrange, the 1st state is switched with the detection switched over that turns on and off of movable member 51 in the 2nd state.
(variation 2)
The optical filter 44 of above-mentioned embodiment and visible light-transmissive parts 45 are configured to be configured between imaging apparatus 41 and pick-up lens 43, but as long as being configured to be arranged in the light path of the light being incident to imaging apparatus 41, it is also possible to be other position.
Fig. 9 is the sectional view of the camera head 24 schematically showing variation 2, and (a) is the figure illustrating the 2nd state, and (b) is the figure illustrating the 1st state.
As shown in Figure 9, optical filter 44 and visible light-transmissive parts 45 arrange side by side and are maintained on the movable member 251 of switching part 25, and it is configured to be arranged in outside pick-up lens 43 in the light path (relative to pick-up lens 43, the side contrary with imaging apparatus 41).
As it is shown in figure 9, movable member 251 possesses: keep the frame portion 2512 of optical filter 44 and visible light-transmissive parts 45；The side surface part 2513 formed in the way of covering the side of imaging apparatus 41 and pick-up lens 43.The end of side surface part 2513 is provided with rotating shaft 251J, at the jut 2511 that the portion from the side of being arranged around 2513 of rotating shaft 251J is prominent.Further, this jut 2511 is connected to the movable core of the solenoid 252S constituted in the same manner as the solenoid 152S of the 2nd embodiment.
Movable member 251 is configured to, can rotate based on the force of the translatory movement of solenoid 252S and drag wire coil spring 252B, instruction according to control portion switches the 1st state and the 2nd state, wherein, described drag wire coil spring 252B, relative to rotating shaft 251J, is configured in the side contrary with solenoid 252S.
Specifically, when solenoid 252S is provided electric current, movable core overcomes the force of drag wire coil spring 252B to shrink, as shown in Fig. 9 (a), visible light-transmissive parts 45 configure in the way of covering the front surface of pick-up lens 43, are namely arranged in and become the 2nd state in the light path being incident to imaging apparatus 41.
On the other hand, when stopping providing electric current to solenoid 252S, movable member 251, under the effect of the force of drag wire coil spring 252B, rotates counterclockwise in the picture view of Fig. 9 (b).Further, it is maintained at the optical filter 44 on movable member 251 to carry out configuring and becoming the 1st state as Suo Shi Fig. 9 (b) in the way of covering the front surface of pick-up lens 43.
Alternatively, it is also possible to be the structure of the solenoid 252S possessing motor to replace variation 2, it is also possible to be configured to utilize this motor to make movable member 251 rotate.
(variation 3)
Msy be also constructed to: the visible light-transmissive parts 45 abolished in variation 2 make movable member 251 miniaturization, optical filter 44 is configured in the state in the light path of imaging apparatus 41 (the 1st state) and switches over the state (returning state) return light path.In the case, pick-up lens 43 can be set as, reduce the 1st state and return the difference of the refractive status of the light of arrival imaging apparatus 41 between state, so, the reliable shooting based on infrared ray and visible ray can either be realized, can become again and inhibit the structure maximized and in the outside of pick-up lens 43, the configuration of optical filter 44 is switched over.
(variation 4)
The optical filter 44 of above-mentioned embodiment and visible light-transmissive parts 45 for base material with glass board material and are formed as both parts and have the thickness of same degree, but in order to focus in imaging apparatus 41, refractive index that the wavelength that can consider and pass through is corresponding or thickness of slab, adopt different materials or adopt the parts of different thickness of slab.That is, as long as being formed as focusing in imaging apparatus 41 under the 1st state and the 2nd state, then optical filter 44, visible light-transmissive parts 45 can be made up of the material that refractive index or thickness of slab are different.
(variation 5)
The switching part 5,15,25 of above-mentioned embodiment and variation is configured to electrically-based and makes movable member 51,151,251 rotate, but can also be configured to: by arranging the operating portion being connected with movable member 51,151,251 and being operated manually this operating portion making movable member 51,151,251 rotate.
(variation 6)
The projector 1 of above-mentioned embodiment have employed the liquid crystal light valve 351 of transmission-type as optic modulating device but it also may utilizes reflection-type liquid crystal light valve.
(variation 7)
Light source 311 is not limited to the lamp of discharge-type, it is also possible to be made up of solid light sources such as the lamp of alternate manner or light emitting diodes.
(variation 8)
In the above-described embodiment, camera head 14,24 is the structure being built in projector 1, but is not limited to this, it is also possible to projector 1 split be separately constructed camera head 14,24.
Claims (5)
1. a camera head, it is characterised in that this camera head possesses:
Imaging apparatus, subject is imaged by it；
Optical filter, the transmitance of its region of ultra-red is higher than the transmitance of visible region；
Visible light-transmissive parts, the transmitance of its visible region is higher than the transmitance of the described visible region of described optical filter；And
Switching part, the 1st state configuring described optical filter in the light path of light being incident to described imaging apparatus is switched over by it with the 2nd state configuring described visible light-transmissive parts in described light path,
Described switching part possesses movable member, described movable member keeps described optical filter and described visible light-transmissive parts, described movable member is by switching over described 1st state and described 2nd state by the rotation centered by the upwardly extending central shaft in the side of the optical axis along described imaging apparatus, described optical filter and described visible light-transmissive parts are configured at described movable member side by side
Described movable member has the shape radially extended from an end residing for described central shaft to another end, and has gear part in another end described,
Described switching part has by transmitting drive force to the drive division that described gear part makes described movable member rotate,
When switching to described 2 state from described 1st state and when switching to described 1 state from described 2nd state, described movable member rotates in the opposite direction.
2. camera head according to claim 1, it is characterised in that
This camera head is also equipped with making the light pick-up lens of imaging on described imaging apparatus from described subject,
Under described 1st state and described 2nd state, described optical filter and described visible light-transmissive parts are inserted between described imaging apparatus and described pick-up lens.
3. camera head according to claim 2, it is characterised in that
Described switching part is also equipped with base component, and described movable member is can be supported in described base component in the way of rotating.
4. camera head according to claim 3, it is characterised in that
Described drive division has:
Produce the motor of described driving force；And
Relay gear, it engages with described gear part, and described driving force is passed to described movable member.
5. a projector, it is characterised in that this projector possesses:
Projection unit, the light enforcement penetrated from light source is modulated and projects according to image information by it；And
Camera head described in any one in Claims 1 to 4, its projection surface that light penetrated from described projection unit is projected to images.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011173619A JP2013038626A (en) | 2011-08-09 | 2011-08-09 | Imaging apparatus and projector |
| JP2011-173619 | 2011-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510115340.3A Division CN104635403A (en) | 2011-08-09 | 2012-08-06 | Image pickup device and projector |
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| Publication Number | Publication Date |
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| CN102955333A CN102955333A (en) | 2013-03-06 |
| CN102955333B true CN102955333B (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510115340.3A Pending CN104635403A (en) | 2011-08-09 | 2012-08-06 | Image pickup device and projector |
| CN201210284397.2A Active CN102955333B (en) | 2011-08-09 | 2012-08-06 | Camera head and projector |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510115340.3A Pending CN104635403A (en) | 2011-08-09 | 2012-08-06 | Image pickup device and projector |
Country Status (3)
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| US (1) | US9733552B2 (en) |
| JP (1) | JP2013038626A (en) |
| CN (2) | CN104635403A (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104635403A (en) | 2015-05-20 |
| CN102955333A (en) | 2013-03-06 |
| US9733552B2 (en) | 2017-08-15 |
| US20130038524A1 (en) | 2013-02-14 |
| JP2013038626A (en) | 2013-02-21 |
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